Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 409 61:32
2007 1144 211:28
2008 3376 460:04
2009 4465 365:00
2010 8653 637:04
2011 5702 348:08
2012 6299 333:29
2013 10892 281:38
2014 5244 156:47
2015 1470 117:20
2016 1319 142:02
2017 2405 179:22
2018 3067 222:16
2019 3828 187:41
 
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